I have a combo box on a form to select a company name. The list of valid
company names is derived from a query, q, and so I have:

    t = db.t_tasks
    c = db.t_companies

    t.f_company.requires = IS_EMPTY_OR(IS_IN_DB(
        db(q), c.id, '%(f_name)s', zero="All"))
 
That works, but the query may return more than one row for any given
company, and thus the combo repeats the company name, once for each row. I
need to make the query DISTINCT, but can't see how to do that.

Can anyone help?

Thanks,
Keith
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